Minn. Stat. § 624.7162: FIREARMS DEALERS; SAFETY REQUIREMENTS.

Subdivision 1. Firearms dealers.

For purposes of this section, a firearms dealer is any person who is federally licensed to sell firearms from any location.

Subd. 2. Notice required.

In each business location where firearms are sold by a firearms dealer, the dealer shall post in a conspicuous location the following warning in block letters not less than one inch in height: "IT IS UNLAWFUL TO STORE OR LEAVE A LOADED FIREARM WHERE A CHILD CAN OBTAIN ACCESS."

Subd. 3. Fine.

A person who violates the provisions of this section is guilty of a petty misdemeanor and may be fined not more than $300.